Insulator.



No. 793,313. PATENTED JUNE 27, 1905. B. B. MOSS.

INSULATOR.

APPLICATION FILED FEB. 1,1904

wucmfo z l/vbbmeooeo Wow *0 (B uo-1 4 Grim/W110 UNITED STATES PatentedJune 27, 1905.

PATENT OFFICE.

BIERTIE I). MOSS, OF PEKIN, INDIANA, ASSIGNOR TO LEANDER G. DAVIS ANI)MILTON HOTTEL, OF SALEM, INDIANA.

INSULATOR.

SPECIFICATION forming part of Letters Patent N 0. 793,313, dated June2'7, 1905.

Application filed February 1, 1904. Serial No. 191,494.

To (all whom 71/; may concern:

Be it known that I, BERTIE B. Moss, a citizen 'of the United States,residing at Pekin, in the county of \Vashington and State of Indiana,have invented new and useful Improvements in Insulators, of which thefollowing is a specification.

This invention relates particularly to insulators used in stringingline-wires on telegraph-poles and the like, and has for its object toprovide an improved insulator characterized particularly by the factthat if the glass parts are broken the wire will not drop, but will becaught and held in the holder which ordinarily holds the glasses.

A further object is to produce a device in which the wire may be firmlyand safely held without tie-wires.

A further object is to produce an insulator to which the wire may beattached and from which it may be removed very quickly Without thenecessity for bending any wires and without the use of any tools excepta Wrench.

A further object is to produce in connection with such an insulator animproved crossarm and pole, as will be more fully described hereinafter.

In the accompanying drawings, Figure 1 is an elevation of atelegraph-pole and cross-arm provided with my insulators. Fig. 2 is anelevation of the insulator-holder. Fig. 3 is an elevation of the glasspieces which directly clamp the wire. Fig. 4 is an inner edge view ofone of the half-sections, two of which form the complete insulator.

Referring specifically to the drawings, the pole is indicated at 6, andthe cross-arm at 7. The cross-arm is made of pipe, which is insertedthrough a hole in the pole where it is 4 fixed by a bolt 8, whichextends through the pole and the pipe.

Each insulator is formed in halves, comprising a holder and the glassesheld thereby. The halves of the holder are joined to form a ring 9,which on its inner side has circumferential flanges 10, also to form astem adapted for attaching the holder to the cross-arm. The stemcomprises a large portion 11, joined to a small conical portion 12,producing at 13 a shoulder which rests on the top of the crossarm, andextending from the conical portion 12 is a smaller portion or bolt 14,the end of which is threaded, as at 15. As stated before, the holder issplit centrally to produce two semicircular halves, the split beingparallel to the axis of the ring, so that it will open.

The glass insulating-blocks are indicated at 16, comprising semicircularhalves which join on a diametrical line to fit within the ring. Theouter edges of these pieces are rabbeted, as at 17, to receive theflanges 10, whereby the glasses are held in place. They also havegrooves 18 at the meeting faces which register to take the wires. Aplurality of grooves are made of different sizes to receivedifferent-sized wires.

A hole is made in the cross-arm to receive each insulator, and the upperpart of each hole is beveled or countersunk to fit the conical portion12. In setting up the insulator its stem is put through the hole in thecrossarm, and the glasses and line-wire being put in place a nut 19 isapplied to the threads 15, Which nut When tightened draws the stem downinto the hole, and the conical portion 12, entering the appropriateenlarged or countersunk portion of the hole in the arm, produces a wedgeaction which binds the parts together tightly. To remove the line-wire,it is simply necessary to loosen the bolt 19 and lift the holdersomewhat from the arm, when the halves can be sprung apart and the wireslipped out at the top.

Preferably a brace 20 is used between the post and the arm, and thisbrace has a hole which receives the stem 14, so that the nut 19 clampsthe brace to the arm. The other end of the brace is clamped against thepost by a bolt 21, which extends through the post, and thus serves toclamp abrace on each side.

It is to be noticed that in case the glasses 16 should be broken bystones thrown by small boys or otherwise the wire will not leave theholder, but remains held in the ring. No tie-wires of any kind areneeded. New glasses may be inserted by taking off the nut 19 andseparating the halves of the ring a sufficient distance to allow the newglass to be slipped in.

A holder constructed in accordance with the invention may be readilyused on wooden cross-arms or posts by making the stem longer, accordingto the thickness of the arm or post, and various modifications may bemade Within the scope of the invention, which is not limited otherwisethan is indicated in the fol-. lowing claim.

What I claim as new, and desire to secure I by Letters Patent, is-

The combination with a pole, of a cross-arm on the p0le,-braces betweenthe pole and crossarm, and insulators having stems which extend throughthe cross-arm and braces, with nuts on said stems binding the partstogether.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

BERTIE B. MOSS. Witnesses:

W. H. MARKLAND, JORDAN NEWLoN.

